diff --git a/pkgs/tools/networking/nbd/default.nix b/pkgs/tools/networking/nbd/default.nix
index 660ae6979798fa..551d2109f28f60 100644
--- a/pkgs/tools/networking/nbd/default.nix
+++ b/pkgs/tools/networking/nbd/default.nix
@@ -15,6 +15,8 @@ stdenv.mkDerivation rec {
   # machines that have a different setup than the local one.
   configureFlags = "LDFLAGS=-static";
 
+  postInstall = ''install -D -m 444 README "$out/share/doc/nbd/README"'';
+
   meta = {
     homepage = "http://nbd.sourceforge.net";
     description = "map arbitrary files as block devices over the network";